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A method for phenotypic evaluation of grapevine resitance in relation to phenological development

Schumacher, Stefan; Mertes, Caroline; Kaltenbach, Thomas; Bleyer, Gottfried and Fuchs, René (2024) A method for phenotypic evaluation of grapevine resitance in relation to phenological development. Scientific Reports, 14 (915), pp. 1-9.

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Document available online at: https://www.nature.com/articles/s41598-023-50666-4


Summary

Fungus-resistant grapevine cultivars, so called PIWIs, are characterized by increased resistance to powdery mildew and downy mildew. However, in order to maintain the durability of resistance in these new grape cultivars, targeted fungicide treatments are recommended. For ideal schedule of these treatments, it is necessary to recognize the most sensitive organs of the grape. This study introduces a method for phenotypic evaluation of Plasmopara viticola resistance in grape clusters under controlled and standardized conditions during phenological development over the entire season. The approach was validated with the traditional cultivar Pinot Noir and the PIWIs Cabernet Cortis (Rpv3.3, Rpv10), Solaris (Rpv3.3, Rpv10) and Souvignier Gris (Rpv3.2). All cultivars were susceptible during the early stages of development up to flowering, and resistance levels increased as phenological development progressed. Cabernet Cortis and Solaris clusters were susceptible until fruit development (BBCH 71–73) when they became almost completely resistant. No differences between Souvignier Gris and Pinot Noir were detected until berries were pea-sized (BBCH 75) when P. viticola resistance of Souvignier Gris clusters increased significantly. Ontogenetic resistance in Pinot Noir was detected at berry touch (BBCH 77–79) and clusters of this cultivar were almost completely resistant at the beginning of ripening (BBCH 81–83). These results indicate that the approach presented is suitable for determining the resistance of grape cultivars at different stages of development. Consequently, in the future, fungicide applications can be adjusted more precisely to the resistance level of a grape cultivar during the growing season.


EPrint Type:Journal paper
Keywords:Vitis vinifera, wines, vineyards, PIWI, Innovation, Wine quality, Sustainability, sensory quality, BÖL, BOEL, FKZ 18OE004, FKZ 18OE033, FKZ 18OE034, FKZ 18OE034, FKZ 18OE035, FKZ 18OE036, FKZ 18OE037, FKZ 18OE038, FKZ 18OE112, FKZ 18OE113, FKZ 18OE114, FKZ 18OE115, VITIFIT, Plasmopara, viticola, Weinbau, Praxisforschungsnetzwerk, disease resistance, downy mildew, powdery mildew, grapevine, fungus-resistant cultivars, Vitis vinifera, Plasmopara viticola, Erysiphe necator, plant protection
Agrovoc keywords:
Language
Value
URI
English
viticulture
http://aims.fao.org/aos/agrovoc/c_8277
English
Vitis vinifera
http://aims.fao.org/aos/agrovoc/c_8283
English
Plasmopara viticola
http://aims.fao.org/aos/agrovoc/c_34557
Subjects: Crop husbandry > Crop health, quality, protection
Crop husbandry > Production systems > Fruit and berries > Viticulture
Research affiliation: Germany > Federal Organic Farming Scheme - BOEL > Plants > Pflanzenschutz
Germany > Other organizations Germany
DOI:10.1038/s41598-023-50666-4
Related Links:https://www.bundesprogramm.de
Deposited By: Zug, Dr. Katharina
ID Code:55865
Deposited On:01 Jul 2025 13:34
Last Modified:01 Jul 2025 13:34
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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